Well I hate to see the kids feel they have responsibility in the decision making process or the parents hurt feelings. My ex threatened to commit suicide, and my youngest said, “Look dad, you know I want to live with you, but I think she’s going to do something crazy. Give me one year. I promise I will come back.” One year turned into three, but he did come back.
The other issue, from a legal standpoint, is what do you do when they get on a plane with your child and disappear? The Uniform Child Custody Act is valid and enforceable in all 50 states, but you need an order.